Name

PQVWR − Returns view representation information. 

Operating States: PHOP, WSOP, ∗, ∗
PHIGS standard function
 

Syntax

PQVWR (WKID, VIEWI, CURQ, ERRIND, VWUPD, VWORMT, VWMPMT, VWCPLM,
XYCLPI, BCLIPI, FCLIPI)

Argument          Data Type      Access    Description
---------------------------------------------------------------------------
WKID              Integer        Read      Workstation identifier
VIEWI             Integer        Read      View index requested
CURQ              Integer        Read      Return current or requested
                                           values flag
ERRIND            Integer        Write     Error indicator
VWUPD             Integer        Write     View transformation update state
VWORMT(4,4)       Array of       Write     View orientation matrix
                  reals
VWMPMT(4,4)       Array of       Write     View mapping matrix
                  reals
VWCPLM(6)         Array of       Write     View clipping limits, in
                  reals                    normalized projection
                                           coordinates (XMIN, XMAX, YMIN,
                                           YMAX, ZMIN, ZMAX)
XYCLPI            Integer        Write     xy-clipping flag
BCLIPI            Integer        Write     Back clipping flag
FCLIPI            Integer        Write     Front clipping flag
---------------------------------------------------------------------------

Constants

 
Defined Argument      Constant       Description
---------------------------------------------------------------------------
CURQ                  PCURVL         Current values
                      PRQSVL         Requested values
VWUPD                 PNPEND         No update pending
                      PPEND          Update pending
XYCLPI,               PNCLIP         Clipping disabled
BCLIPI,               PCLIP          Clipping enabled
FCLIPI
---------------------------------------------------------------------------

Description

PQVWR queries the workstation state list and returns values for the following:

•Viewing transformation update state

•Requested and current view orientation matrices

•Requested and current view mapping matrices

•Requested and current view clipping limits in normalized projection coordinate points

•Requested and current xy-clipping indicators

•Requested and current back-clipping indicators

•Requested and current front-clipping indicators

If the application requests a viewing transformation change but Digital PHIGS does not provide it by the time the application calls this function, the viewing transformation update state is PPEND. 

See Also

PQPVWR
PQVWF
PSVWR
PSVWR3